After replacement of both motor mounts (old were both leaking) vibration inside car became intolerable. Various parts of the car resonate from idle up to about 2100 rpm. At idle the motor doesn't vibrate much at all (for a diesel anyway) when I put my hand on it, but the Air box resonate wildly as seen in video. I am searching for a cause. Engine seems to run well though has been starting a bit rough when below freezing.
Transmission mount was replaced a year ago.

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